Stator winding machine



SePt- 4, 1962 H. J. GoRsKl ETAL sTAToR WI'NDING MACHINE 11 Sheets-Sheet1 Filed May 1, 1958 Sept. 4, 1962 H. J. GoRsKl ETAL sTA'roR WINDINGMACHINE 11 Sheets-Sheet 2 Filed May 1, 1958 Spt- 4, 1962 H. J. GoRsKxETAL 3,052,4l8

sTAToR WINDING MACHINE Filed May 1, 1958 11 Sheets-Sheet 3 l l 9 I lINVENTORS H.` J. GoRsKl E'r AL 3,052,418

sept. 4, 1962 STATOR WINDING MACHINE Filed May 1. 1958 ll SheetS-Shee'b4 Sept. 4, 1962 H. J. GoRsKl ETAL sTAToR WINDING MACHINE Filed May 1,1958 ll Sheets-Sheet 5 INVENTORS MM H Sept. 4, 1962 H. J; GoRsKl ErAL3,052413 sTAToR WINDING MACHINE:

Filed May 1, 1958 11 sheets-sheet 8 ,4 ffor'ne] Sept. 4, 1962 H. J.GoRsKl ETAL sTAToR WINDING MACHINE 11 Shee'LS-Sheei 7 Filed May 1, 1958INVENT ORJ Henry J ors/r/ /Ve/vm Eak ke Affmw/ V7 SP' 4, 1962 H. J. GoRsK| ETAL 3,052,418

sTAToR WINDING MACHINE 11 Sheets-Sheet 8 Filed May l, 1958 Sept. 4, 1962H. J. GoRsKl ETAL sTAToR WINDING MACHINE ll Shee'cs-Sheet 9 Filed May 1,1958 Sept. 4, 1962 H. J. GoRsKl ETAL s'rA'roR WINDING MACHINE 11Sheets-Sheet 10 Filed May 1, 1958 Sept- 4, 1962 H. J. GoRsKI ETAL STTORWNDING MACHINE ll Shee'cs-Sheet 11 Filed May l, 1958 United StatesPatent O M 3,052,418 STATOR WINDIN G MACHINE Henry J. Gorski, Muskego,and Melvin F. Bakke, Milwaukee, Wis., assignors to Lincoln Tool &Manufacturing Co., Milwaukee, Wis., a corporation of Wisconsin Filed May1, 1958, Ser. No. 732,201 8 Claims. (Cl. 242-1.1)

This invention relates to a stator winding machine and more particularlyto an apparatus for efecting the Simultaneous automatic winding of aplurality of stator poles in an electric motor.

The stator winding machine of the present invention comprises a fullyautomatic machine adapted to be adjnsted to effect the simultaneous,automatic winding of a plurality of substantially identical statorpoles on Various sizes of cores.

The machine of the present invention is designed and constructed so thatone operator can run the machine and produce a large number ofaccurately wonnd stators in quantities which have hitherto beenimpossible.

The primary object of the present invention resides in the provison of anew and improved stator winding machine which will effect thesirnultaneous automatic winding of a plurality of stator poles withassnrance that each pole will be provided with the Same number of turns.

A further object of the invention resides in the provision of aplurality of individually adjustable mechanisms whereby the speed of themachine may be varied in accordance with production requirements; theaxial stroke of the Shuttle varied to .accommodate stator cores atdifferent lengths, and the oscillating movement of the Shuttle varied inaccordance with the number of wire receiving slots in the work at handto insure the proper Simultaneous winding of a plurality ofsubstantially identical stator poles on the Various Sizes of cores.

Another object of the invention resides in the novel means forsynchronizing the axial and oscillating movements of the Shuttle in amanner to insure the proper Simultaneous winding of the several statorpoles.

Another object of the invention resides in the novel means whereby theamount of the oscillating movement imparted to the Shuttle at the endsof its axial movement may be varied in accordance with the predeterminedrequirements of the particular stator so that the throw of the Shuttleis automatically and Sequentially increased upon the completion of apredetermined number of winding turns in a given pair of slots in thecore.

Another object of the invention resides in the provison of counter meansfor controlling the periodic operation of the means for automaticallyVarying the amount of oscillating movement of the Shuttle in accordancewith the dictates of the preset counter as predetermined by therequirements of the particular stator poles being wound.

Another object of the invention resides in the provision of anelectrical system whereby the Various cycles of operation of theassociated parts of the machine are under automatic control.

Other objects and advantages will become apparent from the followingdescription of an illustrative embodiment of the present invention.

In the drawings:

FIGURE 1 is a perspective View taken from the left 3,.052,418 FatentedSept. 4, 1962 ICC on the line 5-5 of FIG. 3, showing the associatedrelationship between the Shuttle reciprocating and oscillatingmechanisms;

FIG. 6 is a front elevational view of the machine with part broken awayto show the Operating means and a portion of the linkage under controlof the counter for adjusting the extent of the oscillating movement ofthe Shuttle;

FIG. 7 is an enlarged Vertical transverse sectional View, taken on theline 7-7 of FIG. 5, showing the Operating cam for synchronizing thereciprocating and oscillating movements of the shuttle;

FIG. 8 is a Vertical transverse sectional View, taken on the line 8-8 ofFIG. 7, showing the relationship between the Operating cam and itsassociated cam followers;

FIG. 9 is a Vertical transverse sectional view, taken on the line 9-9 ofFIG. 5, showing in rear elevation a portion of the mechanism foradjusting the extent of oscillating movement of the shuttle;

FIG. 10 is a horizontal sectional View, taken on the line 10-419 of FIG.9, showing the mechanism of FIG. 9 in top plan;

FIG. 11 is a Vertical transverse sectional view taken on the line 11-11of FIG. 9 and including an additional portion of the linkage foradjusting the oscillating movement of the shuttle;

FIG. 12. is a Vertical transverse sectional view, taken on the line12-12 of FIG. 5, showing oscillating yoke which is raised or lowered inresponse to the Controlled positioning of the means for automaticallyselecting the extent of oscillating movement of the Shuttle;

FIG. 13 iS a Vertical transverse sectional view, taken on the line 13-13of FIG. 5, showing additional stroke adjusting linkage in the form of aSlide operatively associated with the oscillating yoke, shown in FIG.12, together with motion transmitting means operatively connected to theshuttle;

FIG. 14 is a front elevational View of the means for adjusting thereciprocating stroke of the Shuttle;

FIG. 15 is a Vertical transverse sectional View, taken on the line 15-15of FIG. 14, showing the .associated relationship at the stroke adjustingmechanism;

FIG. 16 is a diagrammatic View showing the Step by Step elevation of themeans for altering the oscillating movement of the Shuttle;

FIG. 17 is a diagrammatic View showing additional means for altering theoscillating movement of the Shuttle with respect to the fixedoscillating movement of a driving shaft; and

FIG. 18 is a circuit diagram of the electrical controls f 1 1r effetcingthe automatic cyclic operation of the mac me.

The embodiment of the machine, chosen for illustrative purposes in theaccompanying drawings discloses a stator winding machine, constructed inaccordance With the teachings of the present invention.

The stator winding machine comprises a unitary structure including aplurality of operatively associated mechanisms by which the Stroke andoscillating movements of the Shuttle may be properly adjusted, to meetthe requirements of the work at hand, and their movements placed underautomatic cyclic control to increase the amount of oscillating movementyof the Shuttle successively upon the completion of the predeterminednumber of turns of the winding in one pair of slots So that the nextSeries of continuous windings are disposed in the adjacent stator Slotshaving a greater distance between them. The cyclc winding operation willContinue under automatic control until such time as the desired numberof turns of wire have been wonnd in the several stator slots of the coreat which time -the machine will automatically Stop.

'The machine comprises a bed or base 30 upon which a main upright framemember 31 is mounted. The base 30 and frame member 31 are preferablycomprised of weldments fabricated to the proper Size and Shape in theusual well known manner. The frame member 31 is substantially T-shapedand includes a front wall 32 and a rearwardly extending wall 33 whichrespectively form the support for various sub-assembled portions of themachine. Appropriate pieces of Sheet metal are applied to the base andframe members to enclose the Operating parts of the machine.

The general transmission for the machine (see FIGS. 4 and comprises anelectric motor 34 mounted for transverse adjustable positioning on thebase 30. The armature shaft of the motor 34 is provided with a pulley 35which drives a pulley 36 of a speed reducer 37 through the medium of aV-belt 38. The pulley 35 on the armature shaft of the motor 34 is of thevariable speed type so that the driving ratio between pulleys 35 and 36may be altered in accordance with the transverse adjustment of the motor34 with respect to the fixedly positioned speed reducer 37. A multiplebelt pulley 39 is secured to the power output shaft of the speed reducer37 for driving a similar pulley 40 fiXedly positioned on the outerextremity of a drive shaft 41 through the medium of V-belts 42. Suitableidler rollers 43 mounted on adjustably positioned arms 44 serve as meansfor retaining the V-belts 42 in taut condition. The drive shaft 41 isjournaled in suitable antifriction bearings located in the covers 45carried by a casing 46 secured to the wall 33 of the upright framemember 31 in any approved manner. A cam 47 is disposed within the casing46 and is keyed to the drive shaft 41. In order to prevent vibration ofthe drive shaft 41, by reason of the eccentric positioning of the cam4-7 a counterbalance weight 48 is adjustably secured on the outerextremity of the drive shaft 41 adjacent the pulley 40.

The cam 47' provides the actuating means for controlling both thereciprocating and oscillatng movements of the Wire carrying Shuttle ofthe machine.

The mechanism for controlling reciprocating movement of the Shuttle (seeFIG. 5) comprises a pair of cam follower rollers 49 carried by a yoke 50which includes a pair of vertically spaced bars 51 journalled forreciprocating motion in bores 52' formed in bosses 53 which are formedintegral with the outside cover 45 of the casing 46. An actuating rod 54which is journalled for reciprocating movement lthrough the one side ofthe casing 46 has one of its ends secured -to the yoke 50 in anyapproved manner. The outer extremity of the rod 54 is provided with acoupling yoke 55 which is rockably mounted on the pivot pin 56 carriedby one arm 57 of a bell crank 58. The other extremity of the arm '57carries a yoke 59 pivotally mounted on a pin 60. The upper extremity ofthe yoke 59 is threadedly received in one end of a tie rod 61 the 'otherend of which is provided with a` coupling 62 including an eye which isrockably mounted on the pivot pin 63 mounted intermediate the ends of alever 64 which in turn is rockably mounted on a pin 65 supported betweena pair of spaced ears of a mounting bracket 66 fixedly attached to thecasing 46 which houses the cam 47. The other end of the lever 64 isbifurcated to afford a mounting means for a pair of axially spacedrollers 67 disposed on opposite sides of a tubular Shuttle 68. A pair ofadjustably positioned aXially spaced collars 69 are mounted on the innerend of the Shuttle 68 in a manner such that their adjacent faces engagethe opposite sides of both of the rollers 67 to provide a drivingconnection between the upper end of the lever 6'4 and the Shuttle 68. Infact, the pair of aXially spaced collars 69 form a slot within which therollers 67 are free to move upwardly and downwardly to compensate forthe arcuate movement of the free end of the lever 64 with respect to thelineal axial movement of the Shuttle 68. The fulcrum mounting for thebell crank 58 comprises a pivot pin 70 which passes through the outerextremity of an arm 71 of the bell crank 58 and has its outer endsjournalled in a pair of laterally spaced ears formed on a bracket 72which is fixedly attached to the upper surface of a sliding plate 73provided with a groove 74 on each of its lateral sides. A plurality ofball bearings 75 are retained in desired cooperating relationship withthe grooves 74 by means of marginally grooved positioning plates 76 thatare fixedly secured to the upper surface of a saddle 77. The saddle 77is mounted for rotatable adjustment about a horizontal axis formed by apair of axially aligned pins 78 which pass through a pair of upstandinglaterally spaced ears 79 formed on the saddle 77 and a pair of laterallyspaced uprights 80 which form a portion of a mounting bracket 81 securedin fixed position on the bed or base 30 of the machine. One of the pins78 has one of its ends keyed in one of the ears 79 and its other endprovides a keyed mounting for a worm wheel 82 which meshes with a worm83 having a shaft journalled for rotating movement in a pair oflaterally spaced ears 84 carried by one of the uprights S0 of themounting bracket 81. The outer end of the shaft of the worm 83 issquared to receive a crank (not shown) by which the angular position ofthe saddle 77 may be adjusted to alter the movement of Sliding plate 73and the fulcium pin 70 of the bell crank 58, under action of the cam 47,to provide the required distance of reciprocating movement of theShuttle 68 as determined by the length of the stator core at hand.

The mechanism for effecting the oscillating movement of the Shuttle 68(see FIGS. 5-11-13) comprises a pair of cam follower rollers 85 disposedin proper spaced relationship on a yoke 86 which includes a pair oflaterally spaced bars 87 journalled for reciprocating movernent insuitable bores formed in bosses 88 secured to or formed integral withthe inside cover plate 45 of the casing v46. An actuating rod 89 whichis journalled for reciprocating movement through the top of the casing46 has one of its ends secured to the yoke 86 in any approved manner.The upper extremity of the actuating rod 89 is provided with a couplingyoke 90 which is rockably mounted on a pivot pin 91 anchored at one endof a lever 92. The other end of the lever 92 is keyed to a shaft 93which is journalled for rocking movement in a pair of axially spacedfiXed supports, one of which comprises a fixedly positioned boss 94secured to the bottom of a casing 95 and the other of which comprises abearing block 96 secured to a casing 97 which houses the automaticallycontrolled means for adjusting the extent of oscillating movement of theShuttle 68. A crosshead |block 98 is fixedly positioned on the shaft 93intermediate its end. The block 98 is provided with a pair of laterallyspaced parallel bores 99 adapted to receive a pair of bars 100 havingtheir lower ends Suitably anchored in a cross member 101 and their upperends fixedl-y mounted in a cross member 102. The relative axialrelationship of the bars 100 to the crosshead block 98 serves to alterthe oscillating movement transmitted to the Shuttle 68 in a manner to behereinafter more specifically described. A roller 103 rotatably mountedon one face of the cross member 102 is positioned in a groove 104 formedin the face of a lever 105. The upper end of the lever 105 is fixedlymounted on the outer extremity of a shaft 106 which is journalled forfree rotation in the front and rear walls of the casing 95. A segmentalgear 107 is keyed to the shaft 106 intermediate its ends. The toothportion of the segmental gear 107 is in meshing engagement with a gear108 which is keyed to a tubular member 109 provided with an axial bore110 through which the hollow Shuttle 68 reciprocates. An axiallyextending slot 111 formed in the member 109 serves to receive and guidea roller 112 mounted for free rotation on a stud anchored in the hollowShuttle 68. The roller 112 comprises the driving connection between thetubular member 109 and the Shuttle 68 to aosaais impart cyclicoscillating movement to the Shuttle 68 in response to the operation ofthe linkage disposed between the cam 47 and the tubular member 109.

The means for adjusting the extent of oscillating movement imparted tothe Shuttle 68 (see FIGS. 9-13 and 16- 17) comprises mechanism mountedin the casing 97. The casing 97 comprises a hollow fabricated weldmentsecured in proper position on the inner wall 32 of the upright framemember 31 in any approved manner. The bearing block 96, in which one endof the shaft 93 is journalled, is disposed at the inner open Side of thecasing 97. A pair of laterally spaced vertically disposed parallel guiderods 114i are fixedly positioned between the bearing block 96 and aportion of .the top of the casing 97. A sliding block 115 is guided forVertical movement on the guide rods 114. The outer face of the slideIblock is provided with a drilled hole 116 in which a stud 117 isfixedly anchored. The outer extremity of the shouldered stud 117provides a mounting means for a roller bearing 118, the outer race ofwhich forms a mounting means for one end of an open yoke 119 providedwith a central aperture 121i' through which the shaft 93 passes. Thelower closed end of the yoke 119 is also provided with a roller bearing121 which serves as a mounting means for a stud 122 which is anchored ina hole 123 formed in the lower cross member 101 to provide the requiredOperating connection between the yoke 119 and the cross member 101.Vertical movement of the sliding block 115 on the guide rods 114iefifects the raising and lowering of the cross member 102 and itsassociated parts with respect to the crosshead block 93 which is fixedlypositioned on the rock shaft 93 to vary the distance between the aXis ofthe shaft 93 and the roller 1193 to adjust the amount of oscillatingmovement transmitted to the lever 105 to thereby control the distancethrough which the shuttle 63 is oscillated.

The means for efiecting the adjustable Vertical positioning of thesliding block 115 (See PIG. 6) comprises a pair of air cylinders 124,and 125 and their associated mechanism. The cylinder 125 is secured tothe lower surface of the casing 95 adjacent one end thereof. 'Ihecylinder 125 includes a piston having a tail rod 126 which extendsthrough the bottom wall of the casing 97 and has its upper endthreadedly anchored in a slide block 127 guided for Vertical movement ona pair of laterally spaced parallel rods 128 Suitably anchored in thetop and bottoin parts of the casing 97. An inwardly projecting boss 129disposed adjacent the upper end of the block t12'7 includes a pivot pin130 on which one end of a connecting link 131 is rockably mounted. Theother end of the connecting link 131 is rockably mounted on a pivot pin132 mounted adjacent one end of a lever 133 which, in turn, is fulcrumedintermediate its ends on a stud 134 which is anchored in a hole 135passing through the sliding block 115 to which the yoke 119 is rockablyattached. The other end of the lever 133 carries a pivot pin 136 onwhich one end of a connecting link 137 is rockably mounted. The otherend of the link 137 is rockably mounted on a pin 138 secured in aninwardly eXtending boss 139 formed on a slide block 140 which is guidedfor Vertical movement on a pair of laterally Spaced rods 141 mounted infixed parallel relationship between the top and bottom portions of thecasing 97. A stud 142 is threadedly anchored in the slide block 140 andextends downwardly therefrom through a suitable opening formed in thecasing 97. The lower end of the stud 142 is attached to the upperextremity of a tail rod 143 which carries a piston housed within thecylinder 124, the ends of which are fixedly secured to mounting brackets144- and 145. The mounting bracket 144 is secured on the inner wall 32of the upright frame member 31 and serves to position the upper end ofthe cylinder 124 While the bracket fi 145 is attached to the base 30 ofthe machine and forms the support for the lower extremity of thecylinder 124.

The cylinder 125 is designed to assume two positions under the controlof electrically operated valves, to be hereinafter more specificallydescribed and the cylinder 124 is designed to assume three positionsunder the operation of electrically Controlled valves which will also belater described. Referring more particularly to the diagrammatic showingin FIG. 16, it will be noted that the sliding block '115 which carriesthe yoke 119` is capable of sequentially assuming as many as sixdifferent positions during a complete cycle of the stator Windingoperation. The lowermost Operating position of the sliding blockprovides the shortest oscillating movement of the Shuttle 68 throughoutthe application of Winding a predetermined number of turns in one pairof Slots in the core. Upon the completion of the Winding of thepredetermined number of turns in this particular pair of Slots, thesliding block 115 is elevated one step to effect an increase in theeXtent of oscillating movement of the shuttle 68 so that the next seriesof turns of the winding will be positioned within a second pair of slotsin the core disposed at a greater circumferential distance apart thanthat of the first pair of slots. Upon completion of the winding of apredetermined number of turns in the Second pair of core slots, thesliding block 115 is elevated to its next Successive position whereinthe throw of the Shuttle 68 is again increased to direct the winding ofthe next series of turns in a third pair of slots which arecircurnferentially spaced a distance apart which is greater than thedistance between the slots which were previously wound. This sequentialwinding disposed in adjacent pairs of slots continues automaticallyuntil the predetermined number of turns have been applied to the statorcore at which time the machine automatically stops.

A core support 14,6 in the form of an L-Shaped bracket is fixedlypositioned and secured to a face plate 147 which is fixedly attached toa pair of rearwardly extending parallel rods 148 that are journalled foraxial movement in the front wall 32 of the main frame 31 and arearwardly positioned partition 149. An Operating cylinder 15h disposedbetween the rods 148 and parallel thereto is provided With a piston andtail rod to effect the advance of the wound stator core upon thecompletion of the winding operation. One end of the cylinder 1511 ismounted on the inner surface of the front wall 32 of the upright framemember 31 and the tail rod is fixedly attached to the face plate 147 sothat the admission of fiuid under pressure to one end of the cylinderWill effect movement of the face plate 147 and its associated coresupport 146 away from its normal position adjacent the front wall 32 ofthe machine upon completion of the stator winding operation. Theadmission of fluid under pressure to the other end of the cylinder 151DWill cause the face plate 147 to be returned to the position in whichthe stator core may be wound. The automatic control of this device willbe described in connection with the discussion of the electrical controlcircuits.

The programming of the sequential cyclie operation of the mechanism forcontrolling and altering the extent of oscillating movement of theShuttle 68 to effect the continuous winding of the poles by theapplication of the wires in selected pairs of stator slots is under thecontrol of a counter device 152 which is driven from a bevel gear 153keyed to the outer extremity of the drive shaft 41 to meshing engagementwith a second bevel gear 154 keyed to a driven shaft '155 which actuatesthe counter device 152. It should be noted at this point that the gearratio of the bevel gears 153 and 154 is one to one so that each completeturn of the drive shaft 41 and the cam 47 which controls thereciprocating and oscillating movements of the Shuttle 68 will registera single turn on the counter device 152. The counter device includesmeans which are adjustably positionable to preset its operation inaccordance with the requirements of the windings required in anynosa-118 core at hand. In practice and for the purpose of illustratingthe operational characteristics of the counter, let us assume thatthirty-five turns of Wire are desired to be applied in the first pair ofcircumferentially spaced slots in the core and that twenty-five turns ofWire are to be applied in the next two pairs of adjacent slots in thestator core and that thirty-five turns of Wire are to be applied in thefourth pair of slots in the stator core. With these predeterminedrequirements, the operator proceeds to position the control elements sothat electrical contact will be sequentially established upon therespective completion of thirty-five, sixty, eighty-five and one hundredand twenty turns of the counter which indicate the identical number ofcycles of operation of the shuttle 68. Upon the completion of the firstthirty-iive turns, a portion of the electrical control circuit is closedto effect the initial elevating step of the sliding block 115 throughthe action of the first step of advance of the air cylinder 124 and itsassociated mechanism which is connected to the slide block 115. Uponcompletion of the application of the next twenty-five turns in theadjacent slots of the stator core, the second adjustably positionedcontrol on the counter establishes an electrical connection to operatethe tail rod 143 of the cylinder 124.J from its intermediate position toits upper extreme position wherein the slide block 115 is raised to itssecond step of elevation to effect the increased oscillating rnovernentof the Shuttle 68 through the medium of the previously describedoperating means. Upon the completion of the next twenty-five turns inthe adjacent pair of stator slots, the third adjustably positionedcontrol on the counter establishes an electrical connection whicheffects the simultaneous return of the tail rod 143 to its initiallowermost position and the elevation of the tail rod 12.6 of thecylinder 125 to its elevated position. This iadjusted positioning of thetwo tail rods 143 and 126 results in the next step of elevation of thesliding block 115 to again increase the oscillating movement of theshuttle 68 to introduce the next series of continuous windings in theadjacent slots of the stator core which lie beyond 'those which havealready been wound. Upon completion of the winding of the nextthirty-five turns, the winding of the particular stator' pole chosen forillustrative purposes will have been completed and the machine will beautomatically stopped.

The mechanism shown affords means for 'two additional series ofwindings, should the particular Work at hand make them 'desirable In theevent that these additional windings 'are to be applied, additionaladjustably positioned control means may be applied to the counter inaccordance with the number of turns desired in each of the additionalwindings. Upon completion of the winding of the fifth 'bank of turns onthe stator core, fthe -adjusta'bly positioned control establishes anelectrical contact to eifect the e'levation of the tail rod 43 to itsintermediate position with the resulting increased throw transmitted tothe shuttle 68 through the slide block 115 land its associatedmechanisms. Should an additional bank of turns be required the tail rod143 is elevated to its extreme upper position through the operation ofthe -adjustably positioned control which is applied to the counterdevice 152. Summarizing the a'bove briefly, it will be noted that thefirst two elevating steps of the slide block 115 are eifected hy theretention of the tail rod 126 of the cylinder 125 in its lowermostposition and the successive raising of the tail rod 143 to itsintermediate land then to its uppermost position. The additional stepsof elevating the slide block 115 are obtained by the initial raising ofthe tail rod 126 to its uppermost position and the simultaneous returnof the tail rod 43 first to its lowermost position and then to itsintermediate position and las-tly to its extreme upper position.

While the preceding description has defined the transmission andmechanical movements of the various associated elements, no particularemphasis has been laid on the fact that the present machine is adaptedfor and capable of the simultaneous winding of a plurality of pairs ofcircumferentially spaced poles on any given stator core. If fourwindings are to be simultaneously applied to a stator core, fourseparate Wire containers 156 equipped With the usual releasably retainedcovers and wire tensioning means |are positioned behind the machine. Thefour wires drawn from the respective containers are threaded through anopening 157 formed in the upper portion of the rear casing of themachine. The four wires are then trained over pulleys 158, 159 `and 160and then threaded through the hollow shuttle 68 of the machine. Thepulleys 158 and 160 are supported on adjustabily positioned arms 161 and162 respectively which in turn are secured to the inner face of the wall33 of the upright frame member 31.

While the majority of the electrical wiring and control for theautomatic operation of the machine are housed within a compartment 163located on the forward upper left hand side of the machine, it should benoted that several micro switches are located either on or adjacentcertain motion transmitting elements of the machine. For example, anormally open micro switch 164 is mounted in any suitable manneradjacent a cam surface 165 formed on the drive shaft 41 adjacent thebevel gear 153. This micro switch serves to energize and actuate astroke counter 166 which is positioned on the front end surface of thecompartment 163 so as to 'be easily read by the operator. Another microswitch 167 which is normally open is positioned adjacent the lever 64. Abracket 168 including an adjustably mounted screw 169 serves as a meansfor engaging and closing the micro switch 167 when the actuating arm orlever 64 is in its rearwardmost position wherein the shuttle 68 is inits fully retracted position. The purpose and function of the microswitch 167 is to insure against the operation of an emergency stopbutton and also precludes any movement being transmitted to alter thedegree of oscillation of the shuttle 68 unless the shuttle is in itsfully retracted position. The positioning of the micro switch 167 in theelectrical control circuit for the operation of the air cylinders 124and 125 insures against damage to either the needles or fixture holdingthe stator core either through malfunotioning of the machine orattempted inadvertent manual switching. An additional micro switch 170is disposed in a position 'between the front face of the wall 32 of theframe member 31 and the rear face of the core support 14-6. This microswitch 170 is normally open for the purpose of precluding the operationof the machine unless and until the switch is closed by the properpositioning of the core sup-port 146. The proper positioning of the coresupport serves to close the micro switch 170 to place the circuit underthe Operating control of 'the starting switch button.

Before entering into a description of the control circuits shown in FIG.18, it is believed that certain purchased portions of the machine shouldbe identified in a manner such that their detailed construction needno't he included in the present description of the machine. By 'way ofexample, the air cylinders 124, previously referred to, is a threeposition air motor model BYEM SC m'anufactured and sold by The BellowsCompany, of Akron, Ohio and the air cylinder 125 is a two position airmotor manufactured and sold by the same company under the model No. BNEMSOC. The Stepping relay diagrammatically illustrated in the electricalcircuit diagram is of standard form and construction as manufactured andsold -by Automatic Electric Company of Chicago, Illinois. Another ofthese purchased items comprises a clutch-brake unit 171 of theelectrical control type, such as model SOOPCB manufactured and sold byWarner Clutch Brake Company of Beloit, Wisconsin.

The power for energizing the several Operating mechanisms which controlthe Operating cycle of the machine is fed from a pair of powerdistribution lines 175 and 176 to supply current at the proper voltageto the several control mechanisms through appropriate wiringconnections. The main control circuits are energized by the operation ofsolenoid actuated relays 177, 178 and 179 which, in turn, are adapted tobe energized or de-energized iby the manual manipulation of a startswitch 180, a stop switch 181, an emergency stop switch 182 and a jOgswitch 183. The solenoid actuated relay 177 includes a coil 184 and anarmature 185 which carries a plurality of axially spaced Vbridgingconnectors 186, 187 and 188 adapted to make or break electricalconnection respectively between pairs of fixedly positioned contacts189, 190 and 191 respectively of switches 192, 193 and 194. Switches 192and 194 are normally open and switch 193 is normally closed. Thesolenoid a'ctuated relay 17 8 is similarly constructed and includes acoil 195, an armature 196, bridging contacts 197, 198 and 199 adapted tomake or break electrical connection between the fixed contacts ofswitches 200, 201 and 202 respectively. The solenoid actuated relay 179includes a coil 203, an armature 204 and a pair of bridging contacts 205and 206 which respectively make or break the contacts of switches 207and 208 which are normally open. Referring back to the solenoid actuatedrelay 178, it should :be noted that the switch 202 is normally closedand that the switches 200 and 201 are normally open. One end of each ofthe coils 184, 195, 'and 203 are in electrical connection with the powerline 175 through a lead 209. The other end of the coil 184 is connectedto one of the contacts of the switch 207 through a lead 210. The otherend of the coil 195 is connected to one of the fixed contacts of thenormally open switch 200 through a lead 211 which continues to one ofthe fixed contacts of the start switch 180. The other end of the coil203 of the relay 179 is connected by a lead 212 with one contact of amicro switch 167 which is located adjacent the lever 64 and is innormally open position except when the lever `64 and the associatedshuttle 68 are in their fully retracted positions. The second microswitch 164 is in series connection with the other contact of the microswitch 167 and the remaining contact of the micro switch 164 isconnected by a lead 213 to the power distribution line 176. The microswitch 164, which is normally open, is 'located adjacent the drive shaft41 and is actuated by the cam surface 165 to effect its closingoperation on each revolution of the drive shaft 41 to energize thestroke counter 166 through a lead 214 which is disposed between theswitches 164 and 167 and directed to one terminal of the counter 166.The other terminal of the counter is connected through a lead 215 to theother power line 175. One end of a primary winding 216 of a transformer217 is connected to the lead 215 and its other end is connected by lead218 to the power line 176. One side of a secondary winding 219 isconnected to ground through a lead 220 and the other side of the windingis connected to one contact of a micro switch 170 located on the frontface of the wall 32 of the frame member 31. The micro switch 170 isnormally open and is closed only upon 'the proper positioning of thecore support 146. In the absence of proper core support positioning, themachine cannot be put intO operation. The other side of the micro switch170 is connected to one of the fixed contacts 189 of the normally openswitch 192 by a lead 221. The other contact of the switch 192 isconnected to a lead 222 to moveable contact arms 223 and 224,respectively, of the second and third level of a Stepping relay 225, theoperation of which will hereinafter be more specifically described.

The operation of the clutch-brake device 171 is under the control of anelectrical circuit which includes the switch 201 of the relay 178,switch 208 of the relay 179 and switch 193 of the relay 177. A lead 226is disposed between one terminal of the clutch-brake device 171 and onefixed contact of the normally open switch 201 of the relay 178 and alsoone fixed contact of the normally open switch 208 of the relay 179. Abranch lead 227 connects the lead 228 to one fixed contact of thejogging switch 183. The other .fixed contact of the jogging switch 183is connected 'to the remaining fixed contacts of the switches 201 and193 through a lead 228. The remaining fixed contacts of the normallyclosed switches 193 and 208 are connected by a lead 229 to the otherterminal of the clutch-brake device 171 to place the clutch-brake 171under automatic control of the electrical system.

The switches 202 of the relay 178 and 194 of the relay 177 control theoperation of the stepping relay 224 and the mechanism associatedtherewith to control the automatic operation of the cyclically increasedthrow of the shuttle 68. In order to insure the accurate operation ofthe Stepping relay 225, its actuating coil 230 iS supplied with directcurrent through the medium of a reotifier 231 which is supplied withalternating current through leads 232 and 233 which are respectivelyconnected to the power distribution lines 175 and 176. The directcurrent output of the rectifier comprises a pair of leads 234 and 235.Lead 234 is connected to one end of the coil 230 and the other end ofthe coil transmits current through 'a lead 236 to one contact of thenormally open switch 194. The other contact of the normally open switchis connected to the lead 235. A branch lead 237 which forms acontinuation of lead 235 carries electrical current to a movable contact238 of a switch 239. The periodic energization of the coil 230 effectsthe automatic opening of the switch 239 to effect the step by stepadvance of a shaft 240 in its rotating movement to thereby advance thecontact arms 223 and 224 together with arm 241 of the first level whichare fixedly positioned on the rotatable shaft 240 of the Stepping relay225. The fixed contact of the switch 239 is connected to the arm 241 ofthe first level of contacts of the Stepping relay 225 by means of a lead242. A series of circumferentially spaced contacts 243, adapted to besuccessively engaged by the step by step advance of the arm 241 underthe action of the periodic rotation of the Stepping relay 225, areconnected by a lead 244 'which forms a branch lead 236 to establish anelectrical connection through the medium of the switch 194.

A cam disc 245 mounted on the shaft 240 of the stepping relay 225 servesto periodica'lly effect the opening of an associated switch 246. ThefiXed contact 247 of the vswitch 246 is connected by a lead 248 to oneside of the stop switch 181 which is normally closed. The other side ofthe normally closed stop switch 181 is connected by means of a lead 249.to one side of the micro switch 170 and the other side of the microswitch is connected by a lead 250 to one of the fixed contacts of thenormally open 'switch 200 through a lead 251 which carries current toone side of the start switch 180. The lead 252 from the other side ofthe start switch connects with the lead 211 on one of the contacts ofthe normally open switch 200.

Referring back to the Stepping relay 2257, it Will be noted that themoveable contact arm 223 is in position to control the winding of thefirst bank of turns of wire in a pair of circumferentially spaced slotsformed in the stator core. The same condition is true with respect tothe rotatable contact 224 of the third level of the stepping relay 225.Upon completion of the winding of a predetermined number of turns on thestator core, the energized coil 230 of the Stepping relay is'momentan'ly deenergized. The de-energization of the coil 230 effects onestep of advance in the rotational movement of the shaft 240 of theStepping relay to simultaneously effect movement of the contact arms 223and 224 to their second position wherein they establish electricalconnections which control the operation of the several valves mounted onthe air cylinders 124, and 150. The three position air cylinder 124includes four coils 253, 254, 255. and 256. The cylinder 125 includestwo valve operat- 1 1 ing coils 257 and 258 to regulate its movement toeither of two positions. The cylinder 150, which is also a two positiondevice, includes electrically controlled valves under the operation ofcoils 259 and 250i. It should be noted that one end of each of the valveoperating coils 253 through 260 is grounded through suitable leads. Aseries of circumferentially spaced contacts 261 are adapted to besuccessively engaged by the step by step advance of the armature 223. Asimilar series of circumferentially spaced contacts 262 on the thirdlevel of the stepping relay 225 are adapted to be successively engagedby the moveable contact 224 upon the step by step rotation of the shaft240. The several spaced contacts 261 and 262 are respectively connectedthrough electrical leads to the appropriate coil which form theelectrical control for regulating the movements of the pistons in theseveral cylinders. In the position indicated in the circuit diagram(FlG. 18) the piston in the cylinder 124 is in its retracted positionand the piston in the cylinder 125 is also in retracted position so thatthe sliding block 115 which regulates the throw of the oscillatingmovement of the shuttle 68 is in its lowermost position wherein theextent of oscillation of the shuttle 68 is at its minimum setting. Uponcompletion of the winding of a predetermined number of turns of Wire inthe first pair of slots in the stator core, the counter controlmechanism interrupts the flow of current through the coil 230 to effectone step of advance of the shaft 240 with the resu'ltant advance of thecontacts 223 and 224 to their next Operating position Wherein the coil254 is energized to effect the raisiug of the piston in the cylinder 124to its intermediate position to increase the oscillating movement of theshuttle 68 so that the next bank of tums of Wire are deposited in thenext pair of slots which are more remotely spaced than that of the firstpair of slots. Upon completion of the winding of a predetermined numberof turns of Wire in the second pair of slots, the counter again breaksthe circuit through the coil 239 to effect the next step of advance ofthe shaft 240 and the contacts 223 and 224 to their third positionWherein the coil 253 is energized to effect the raisng of the piston inthe cylinder 124 Ito its extreme upper position to thereby againincrease the oscillating movement of the Shuttle to deposit the nextsucceeding windngs in the next adjacent pair of slots in the core. Uponthe completion of the winding of a predetermined number of turns in thelast mentioned slots the counter again effects the breaking of thecircuit through the coil 230 to again advance the position of thecontacts 223 and 224 to their next successive position wherein the tailrod of the cylinder 124 is returned to its lowermost position and thecoil 255 is energized to effect the movement of the tail rod of thecylinder 125 to its uppermost position wherein the amount of oscillatingmovement of the shuttle is again increased to apply the next series ofturns to an adjacent pair of slots in the stator core. Upon thecompletion of the winding of a predetermined number of turns in the lastnamed slots, the counter again effects the breaking of the circuit inthe coil 230` to effect the next step of indexing movement to thecontacts 223 and 224 wherein the coil 254 is again energized to effectthe raising of the tail rod in the cylinder 124 to its intermediateposition to again increase the distance of oscillating movement of theShuttle to place the next series of windings in the next adjacent slots'in the stator core. Upon completion of the winding 'of a predeterminednumber of turns in the last named slots, the counter again breaks thecircuit through the coil 230 to eflect the next step of advance of thecontacts 22%` and 224. This positioning of the contacts 223` and 224results in the elevation of the tail rod of the cylinder 224 to itsuppermost position wherein the throw of the shuttle is again increasedto effect the next series of windings in the adjacent pair of slots inthe stator core. Upon the completion of the winding of a predeterminednumber of turns in the last named slots,

the counteragain operates to advance the contacts 223, 224 and 241. Itshould be noted that the contacts 223 and 224 serve no active functionunder the last indexing movement. However, the contact 241 establishesan electrical connection with the next of a series of contacts 243, inthe first level of the Stepping relay 245 and the indexing movement ofthe Stepping relay 225 continues to operate until the contacts 223 and224 have been returned in a homing operation to the position shown inFIG. 18 wherein the machine has completed the winding of the poles onthe stator core and is ready to receive another core to be wound in asimilar manner.

Upon completion of 'the last series of Windings on a given core, thecoil 259 of the cylinder to effect the advance of the core support 146and its associated face plate 147 to permit the cutting of the wires andthe removal of the wound stator core from the machine.

During the winding operation of one stator core, another stator core isprepared for application to the face plate of the machine by theapplication of suitable shoes and the mounting of the same in a statorholding fixture which serves to simultaneously position the shoes andretain the stator in proper position within the fixture. After removalof the previously wound stator core, the fixture holding the statorabout to be wound is properly positioned on the stator support and faceplate of the machine and releasably retained thereon through the actionof a manually operated clamping mechanism. The free ends of the severalwires which extend through the hollow Shuttle 68 are suitably anchoredto the core support, in any approved manner, and the machine is ready toeffect simultaneous winding of one or more pairs of poles on the stator.

A brief description of the operation of the machine Will serve toemphasize the simplicity of its sequence of operation for effecting thesimultaneous winding of one or more pars of stator poles in the slots ofa stator core. With the machine properly adjusted for the properreciprocating and oscillating movements of the shuttle and with a coreproperly positioned on the core support 146, the start button isdeprcssed to energize the operating coil on the relay 178. This closesswitches 2% and 291 and opens switch 2112. The switch 2% is a holdingswitch to keep the machine in operation. The vholding circuit thusestablished may be broken by the microswitch 170 on the face of themachine, the stop button 181 and certain contacts of the stepping relay225 upon completion of `the complete cycle of the winding operation. Themicroswitch 17% on the face of the machine is primarily intended as asafety device to insure the automatic stopping of the machine in theevent that the position core is not properly clamped or in the eventthat it should loosen during the Winding operation and cause the faceplate to move away from the proper position Wherein the normally openmicroswitch 171i is maintained in closed position. This safety featureinsures against damage to the threading needle and shoes. v Switch 201on the relay 178 closes the circuit that controls the operation of theclutch-brake unit 171. The closing of the circuit energizes the clutchto transmit power from the driving motor 34 to the remaining portion ofthe machine transmission. The opening of the circuit disengages theclutch and operates the brake to effect the instantaneous stopping ofthe machine. This circuit can also be closed by the operation of the jogswitch 182 and the switch 2% of the relay 179. The switch 293 serves tocarry the machine through the switching portion of the cam limit switch.Switch 252 is a safety switch to disconnect the emergency stop circuit,and also to prevent jogging operation through the switching portion ofthe cycle of the machine.

Relay 177 is actuated by the delay contact 267 and switch 2415 to closeswitches 1192 and 194 and open switch 193 of the relay 177. Switch 192closes the low voltage current to the Stepping relay 225 and moreparticularly the second and third level which include the moveablecontacts 223 and 224 respectively. These two levels of the steppingrelay 225 control and distribute the low voltage to the proper terminalson the several solenoid valves of the air cylinders 124, 125 and 150 todirect their proper and timed sequential operation to insure the properwinding of the several stator poles on the core. The stepping switch 225is of standard commercial form and effects the simultaneous advance ofthe several contacts 223, 224 and 241 across a series ofcircumferentially spaced fixedly positioned contacts to control thetimed sequential operation of the several solenoid valves operativelyassociated with their respective cylinders. As is common in this type ofStepping switch, the brushes or contacts execute one step of advanceeach time that the coil is energized and de-energized. It is understoodthat the actual step lhy step advance of the several contacts iseffected upon 'the de-energization only of the Operating coil 230 of theswitch 225.

The first level of contacts engaged by the moveable arm 241 are actuatedby the interrupter switch 239 after the completion of the winding of thelast series of turns on the stator core to return the Stepping relay 225to its homing or starting position` During this operation, the Steppingswitch operates to open the holding circuit of rclay 178 to shut off themachine at the completion of the winding operation. Switch 193 on therelay 177 serves to open the circuit to the clutch-brake 171 to stop themachine momentarily during the operation of the air cylinder 150. Thisis accomplished through the delay switch 207 of the time relay 179.

Switch 194 on the relay 177 energizes the coil 230 on the Stepping relay225 to advance the contacts to their next successive position when thecoil 230 is de-energized. All of these Operations are performed in theproper sequence under the control of the counter 152, which comprises aprogram monitor which is capable of being selectiveiy setup to insurethe winding of the proper number of turns in each pair of core slots ofthe stator. At predetermined intervals, that is the completion of theproper number of turns in one pair of slots in the stator, the counter152 closes the switch that operates the time relay 179.

The stop switch which is manually operable serves to disconnect thecontrol circuit, at will, to effect the manual stopping of the machineat the will of the operator.

The jog switch 153 is connected directly in the control circuit of theclutch-brake 171 through switch 193 of the relay 177 so that the machinecannot be jogged during the operation of the Stepping relay 225. Thisarrangement insures against the malfunctioning of the machine whichwould result in damage to the needles and shoes which are respectivelymoving through or positioned in the stator core.

The emergency stop switch 182 is connected to the advance side of thecylinder 150 which effects the advance of the face plate 147 and coresupport 146 upon the completion of the winding operation. This circuitis completed through switch 202 of the relay 178 and the micro switch167 mounted on the lever 164 to permit the operation of the solenoidvalves Controlled by the coils 259 and 260 on the cylinder 150 only whenthe arm 64 is in its fully retracted position which insures that theshuttle 68 has been withdrawn from the core of the stator. Thepositioning and operation of the micro switch 167 on the arm drivinglever 64 controls the energization, at low voltage of the several coilsoperatively associated with the respective cylinders 124, 125 and 150 sothat none of these cylinders may be activated `to effect their movementat any time except When the shuttle 68 and its Operating lever 64 are infully retracted position. This arrangement also provides a safetyfeature to insure against damage to any of the Operating parts of themachine and more particularly the needles which are mounted on theforward extremity of the shuttle 68 and 14.- which pass through theslots formed in the stator core during the cyclic operation of themachine.

A brief comment with regard to the cam 47 Will serve to emphasize bothits simplicity and effectiveness in providing the simultaneous controlfor the reciprocating and oscillating movements of the shuttle 68. Itshould be noted that the cam is divided into four quadrants the oppositepairs of which are designed to effect the dwell of one pair of camfollowers, while the other pair of cam followers disposed at a rightangle to the first pair of cam followers are being moved. By reason ofthis arrangement, it is apparent that the forward and retracting strokesof the shuttle 68 must be completed before the oscillating movement ofthe shuttle is etfected. ln like manner, the oscillating movement of theshuttle 68 must be completed before its recprocating movement may beeifected. This feature of the machine is of material significance byreason of the fact that both the reciprocating and oscillating movementsof the shuttle 68 are under the control of a single cam element 47.

A brief comment regarding the means for eifecting the step -by stepincreased oscillating movement of the shuttle 68 at predeterminedintervals under the control of the programming monitor or counter 152will serve to emphasize its etfectiveness in accomplishing the desiredresult. The oscillating movement of the shaft 93` under control of thecam 47 is constant at all times. The means for altering the distance ofoscillating movement of the shuttle 68 in response to the dictates ofthe programming monitor or counter 152 comprises the slide block 115which is successively elevated upon the completion of the winding of apredetermined number of turns in one lpair of slots in the core throughthe operaton of the cylinders 124 and 125. The step by step elevation ofthe sliding block 115 effects the raising of the cross member 101 withrespect to the crosshead block 98 carried by the oscillating shaft 93.The raising of the cross member 101 results in the elevation of thecross member 102 associated therewith through the bar to effect theraising of the roller 103 in the groove 104 of the lever 105 to therebyincrease the throw of the lever 105 to thereby impart greateroscillating movement to the shuttle 68. The step by step elevation ofthe sliding block results in the step by step increase in theoscillating movement of the shuttle 68 to thereby deposit the turns ofwire in successive pairs of slots in the stator which ;are disposed agreater circumferential distance apart than that of the slots in whichthe preceding winding were applied. The means for etfecting the step bystep increase of oscillating movement to the shuttle 68 from the shaft93 which has a fixed degree of oscillating movement also provides one ofthe important features of the present machine.

While the invention has been described in considerable detail in theforegoing specification, it is to be understood that various changes maybe made in its embodiment without departing from or sacrificing any ofthe advantages hereinafter claimed.

We claim:

1. A stator wiuding machine comprising a holder on which a slottedstator core is removably positioned, a wire carrying shuttle axiallymovable through the positioned stator core, shuttle reciprocating means,shuttle oscillating means, a driving shaft for said shuttlerepciprocating and oscillating means, a cam fixedly positioned on saiddriving shaft, said cam having active portions to synchronize cyclicreciprocating and oscillating movements of said shuttle, a cam followeroperatively associated with said cam to effect movement of said shuttlereciprocating means, a cam follower operatively associated with said camto effect movement of said shuttle oscillating means, an intermediateshaft in said shuttle oscillating means, the oscillating movement ofsaid intermediate shaft being constant in amount, adjusting means insaid shuttle reciprocating means to alter and control the extent ofaxial movement of said shuttle to compensate for various lengths ofstator cores, counter means driven by said driving shaft to indicate thecycles of machine operation and the number of turns of Wire applied to acircumferentially Spaced pair of Wire receiving slots in Said core, andadjusting means in said Shuttle oscillating means under the automaticcontrol of said counter means to successively increase the extent ofoscillating movement of said Shuttle to transfer the Winding operationto adjacent more remote pairs of circumferentially spaced slots in thestator core upon the completion of the Winding of a predetermined numberof turns in the next preceding pair of circumferentially Spaced Wirereceiving slots in the stator core.

2. A stator Winding machine comprising a holder on which a slottedstator core is removably positioned, a Wire carrying Shuttle movablethrough the positioned stator core, Shuttle reciprocating means, Shuttleoscillating means, a driving shaft for driving said reciprocating andoscillating means, a cam fixedly positioned on said driving shaft, saidcam having active portions to synchronize cyclic reciprocating andoscillating movements of the Shuttle, a cam follower operativelyassociated with said cam to effect movement of said Shuttlereciprocating means, a cam follower operatively associated With said camto eifect movement of said Shuttle oscillating means, an intermediateshaft in said Shuttle oscillating means, Said shaft having a constantamount of oscillating movement, adjusting means in Said Shuttlereciprocating means to alter and control the extent of axial movement ofSaid Shuttle to compensate for various lengths of stator cores, countermeans driven by said driving shaft to indicate the cycle of machineoperation and the number of turns of Wire applied to a circumferentiallySpaced pair of Wire receiving slots in the core, and adjusting means insaid Shuttle oscillating means under the automatic control of saidcounter means and operatively associated With said intermediate shaft tosuccessively increase the extent of oscillating movement of Said Shuttleupon completion of a bank of turns in one pair of stator core slotsWhereby the next series of turns are applied to a second pair of coreslots which include a greater circumferential spacing than the firstpair of slots.

3. A stator winding machine comprising a holder on which a slottedstator core is removably positioned, a Wire carrying Shuttle movablethrough the positioned stator core, Shuttle reciprocating means, Shuttleoscillating means, a driving shaft for driving said Shuttlereciprocating and oscillating means, a cam fixedly positioned on Saiddriving shaft, said cam having active portions to synchronize cyclicreciprocating and oscillating movements of Said Shuttle, a cam followeroperatively associated With Said cam to effect movement of Said Shuttlereciprocating means, a cam follower operatively associated With said camto effect movement of said Shuttle oscillating means, an intermediateshaft in said Shuttle oscillating means disposed between said cam andsaid Shuttle, Said intermediate shaft having a constant amount ofoscillating movement under the action of said cam, adjusting means inSaid Shuttle reciprocating means to alter and control the extent ofaxial movement of said Shuttle to compensate for varying lengths ofstator cores, counter means driven by said driving shaft to indicate thenumber of turns applied to a pair of stator core slots, adjusting meansin said Shuttle oscillating means under automatic control of Saidcounter means and operatively associated With said intermediate shaftfor altering the amount of oscillating movement of Said Shuttle inresponse to constant oscillating movement of Said intermediate shaftupon completion of a bank of turns in one pair of stator core Slots, andadjustably positioned means on Said counter to predetermine the numberof turns applied to any particular pair of Slots in the core Wherebyupon completion of the predetermined number of turns of Wire in one pairof core slots the next series of turns are applied to a Second pair ofcore Slots Which include a .greater circumferential spacing than thefirst pair of slots to thereby effect the continuous Winding of a poleon the stator core.

4. A stator Winding machine comprising a holder on Which a stator coreis removably positioned, a Wire carrying Shuttle axially movable throughthe positioned stator core, Shuttle reciprocating means, Shuttleoscillating imeans, .a driving shaft for driving said Shuttlereciprocating and oscillating means, a cam fixedly positioned on Saiddriving shaft, a cam follower operatively associated With and driven bysaid cam to effect reciprocating movement of Said Shuttle, a camfollower operatively associated With and driven by said cam to effectthe oscillating movement of Said Shuttle, Said cam means serving tosynchronize the cyclic reciprocating and oscillating movements of SaidShuttle, an intermediate shaft in said Shuttle oscillating meansinterposed between said driven shaft and Said shut-tle, saidintermediate shaft having a constant degree of oscillating movement, acounter driven by said driving shaft to indicate the number of cycles ofShuttle movement to thereby count the number of turns applied to a pairof circumferentially spaced parallel Wire receiving slots in Said statorcore, adjustably positioned means on Said counter to predetermine thenumber of turns to be applied to any particular pair of Slots in Saidcore, adjusting means in Said Shuttle recprocating means to alter -andcontrol the extent of axial movement of Said Shuttle to compensate forvarying lengths of stator cores, and adjusting means in said Shuttleoscillating means to alter the amount of oscillating movementtransmitted to said Shuttle from said intermediate shaft to successivelyincrease the extent of oscillating movement of Said Shuttle to transferthe continued Winding operation to a Second pair of stator core Slotshaving a greater circumferential spacing than the previously mentionedpair of slots upon the completion of the Wind'ing of a predeterminednumber of turns in said first named Slots.

5. A stator Winding machine comprising a holder on which a slottedstator core is removably positioned, a Wire carrying Shuttle axiallymovable through the positioned stator core, Shuttle reciprocating means,Shuttle oscillating means, a driving shaft for driving Said Shuttlereciprocating and oscillating means, a cam fixedly positioned on saiddriving shaft to synchronize the cyclic reciprocating and oscillatingmovements of said Shuttle, a cam follower operatively associated WithSaid cam to effect the movement of Said Shuttle reciprocating means, acam follower opera-tively iassooiated With Said cam to elfect themovement of said Shuttle oscillating means, Said Shuttle oscillatingmeans including an intermediate shaft interposed between said drivingshaft and said Shuttle, the oscillating movement of Said intermediateshaft being constant in amount, a counter means driven by Said drivingshaft to indicate the number of cycles of Shuttle 'movement to therebycount the number of turns applied to a pair of circurnferentially spacedparallel Wire receiv- `ing lSlots in Said stator core, -adjustablypositioned means on Said counter to predetermine the number of turns tobe applied to any particular pair of slots in the core, and adjustingmeans in said Shuttle oscillating means under the control of saidadjustably positioned means on said counter to alter the amount ofoscillating movement transmitted to Said Shuttle from said intermediateshaft to successively increase the extent of oscillating movement ofsaid Shuttle to transfer the continued Winding operation to a secondpair of stator Slots having a greater circumferential Spacing than theIpreviously mentioned pair of slots upon the completion of the Windingof the predetermined number of turns of Wire in the first named slots.

6. A stator Winding machine comprise a holder on Which a slotted statorcore is removably positioned, a Wire carrying Shuttle movable throughthe positioned stator core, Shuttle reciprocating means, Shuttleoscillating means, a driving shaft for driving said Shuttlereciprocating and oscillating means, a cam fixedly positioned on saiddriving shaft to synchronize the cyclic reciprocating and oscillatingmovements of said Shuttle, a cam follower operatively associated Withsaid cam to effect the movement of said Shuttle reciprocating means, acam follower operatively associated With said cam to effect the movement'of said Shuttle oscillating means in opposite directions at therespective ends of its reciprocating movement, said shuttle oscillatingmeans including an |intermediate shaft interposed between said drivingshaft and said shuttle, the degrees of oscillating |movement of Saidintermediate shaft being constant, a counter driven by said drivingshaft to indicate the number of cycles of shuttle movement to therebycount the number of turns applied to a pair of circumferentially spacedparallel Wire receiving slots in the stator core, adjustably positionedmeans applied to said counter to preselect the number of turns of Wireto be applied to a pair of circumferenti'ally spaced slots in the core,and adjusting means in said shuttle reciprocating means to alter andcontrol the extent of aXial movement of said shuttle to compensate forvarying lengths of stator cores, and adjusting means in said shuttleoscillating means under the control of said counter means tosuccessively increase the oscillating movement transmitted to saidshuttle from said intermediate shaft to successively increase the extentof oscillating movement of said shuttle to transfer the continuedWinding operation to =a second pair of stator slots having greatercircumferential spacing than first named pair of slots upon thecompletion of the Winding of the predetermined number of turns in thefirst named slots.

7. A stator Winding machine comprising a holder on which a stator coreis removably positioned, a Wire carrying Shuttle movable through thepositioned stator core, shuttle reciprocating means, shuttle oscillatingmeans, a driving shaft for driving Said shuttle reciprocating andoscillating means, a cam fixedly positioned on said driving shaft tosynchronize the cyclic reciprocating and oscillating movements of saidshuttle, a cam follower operatively associated vWith Said cam to effectthe movement of said shuttle reciprocating means, a cam follower,operatively associated with said cam to effect the movement of saidshuttle oscillating means in opposite directions at the respective endof its reciprocating movement, said shuttle oscillating means includingan intermediate shaft interposed between said driving shaft and saidShuttle, the degree of oscillating movement of said intermediate shaftbeing constant, a counter means driven by said driving shaft operativeto indicate the number of turns of Wire applied to a pair ofcircumferentially spaced Wire receiving slots in the core, adjustablypositioned means on said counter to preselect the number of turns to beapplied to a particular pair of slots in the core, adjusting means insaid shuttle reciprocating means to alter and control the eXtent ofaxial movement of said shuttle to compensate for varying lengths ofstator cores, and adjusting means in said shuttle oscillating meansoperatively associated with said intermediate shaft and under control ofsaid counter means to successively increase the oscillating movement ofsaid shuttle to transfer the Winding operation of said shuttle to anadjacent more remote pair of slots in the stator core upon thecompletion of the Winding of a predetermined number of turns in thepreceding pair of slots in the stator core.

8. A stator Wnding machine comprising a holder on which a stator core isremovably positioned, a Wire carrying shuttle movable through thepositioned stator core, shuttle reciprocating means, shuttle oscillatingmeans, a driving shaft for driving said shuttle reciprocating andoscillating means, a cam element fixedly positioned on said drivingshaft to synchronize the cyclic reciprocating and oscillating movementsof said Shuttle, a cam follower operatively associated With said cam toeffect the movement of said shuttle reciprocating means, a cam followeroperatively associated With said cam to effect the movement of saidshuttle oscillating means in opposite directions at the respective endsof its reciprocating movement, said shuttle oscillating means includingan intermediate shaft interposed between said driving shaft `and saidshuttle, said intermediate shaft having a Constant degree of oscillatingmovement, a counter means driven by said driving shaft and operative toindicate the number of turns of Wire applied to a circurnferentially'spaced pair of Wire receivng slots in the core, adjustably positionedmeans on said counter to preselect the number of turns of Wire appliedto a particular pair of slots in the core, adjusting means in saidShuttle reciprocating means operative to alter and control the extent ofaxial movement of said shuttle to compensate for varying lengths ofstator cores, and adjusting means in said shuttle oscillating meansoperatively associated With said intermediate shaft and under control ofsaid counter means to automatically successively increase the extent ofoscillating movement of said Shuttle to transfer the Winding operationof said shuttle to an adjacent more remote pair of 'circumferentiallyspaced slots in the stator core upon the completion of the Winding of apredetermined number of turns in the next preceding pair ofcircumferentially spaced Wire receiving slots in the stator core.

References Cited in the file of this patent UNITED STATES PAT ENTS1,431,947 Gysel Oct. 17, 1922 2,640,652 Harvey Inne 2, 1953 2,847,l Lillet al. Aug. 12, 1958

